Furnace



ma Model.)

G. JONES. SUPERHEATING PURNAGE.

Piatented Apr. l, 1884.

UNrrnn STATES ATENT Finca.

@OMER JONES, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO THESTANDARD VAPOR FUEL IRON AND STEEL COMPANY OF NEW' YORK.

SUPE RH EATING-FU RNAC E.

SPECIFICATION forming part ofiLetters Patent No. 296,176, dated April 1,1884.

lApplication filed February 1, 1884.

To all whom it may concern:

Be it known that I, Gonna JoNns, a citizen of the United States,residing at .Vashington, in the District of Columbia, hare inventedcertain new and useful Improvements in Superheating-Furnaces; and I dohereby declare the foilowing to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to furnaces for super1` heating steam.

The object of my inventionis to improve the construction of thefirelbox; and the invention consists of the particular arrangement ofarches, which will hereinafter be fully described and claimed, referencebeing had to the accompanying drawings, in which- Figure 1 represents avertical section 2o through the furnace, and Fig. 2 a vertical sectionthrough one of the fines at each corner oi' the furnace; Fig. 3, a topplan View of one of the arches.

A represents the furnace; B, the retort inclosed in a superheater; andC, a superheater,

loca-ted in'gthe downflue.

The furnace A, which may be of any desired shape, is provided with amixing-chamber, A', and a combustionchamber, A2. The

mixing-chamber is divided into two parts, a

and a. The part a. is provided with a doorway, c2, for the admission ofair. If desired, the walls of the 4chamber may be provided withapertures, c3, (shown in dotted lines,

3,5 Fig. 1,) for the admission of air to all sides of the gas-supplierof?, which may be of any common form. The part a is properlythemixing-chamber, and consists of arches ai, sprung from side to side ofthe chamber A'.

4o These arches are formed of rows al of lirebrick, separated from cachother by retainingbricks ci'. The rows in the arch above the lower archregister with the space between the rows in the lower arch, and the rowsin the top arch register with the space between the rows in the secondarch. In other words, the

rows in the several arches are arranged in a staggered manner to oneanother. The retaining-brick a5 in the different arches are also 5carranged in a stag ered manner to each otherthat is to say, t e bricksshown in dotted lines in the second arch ci are on substantially thesame line as thc space between the (No model.)

retaining-brick in the lower or upper arch, so that the currents of airand gas will be still further broken by the deection of the retain-Ying-bricks. The air and gas passing through these arches are thoroughlycomlningled and burned at the top arch, which forms the bottom of thecombustion-chamber. The walls of this chamber are lined with fire-brick,and vare of octagonal shape, to bring the corners of the chambers nearerthe retort, which is seated in any desired manner in the top of thecasing. In each of the corners are short cross iiues or ports a,connecting the colnbustionchamber A2 with the downdues A3, (one onlybeing shown.) These dues are connected in any desired manner to the ueA4, leading to a chimney. In all of these ues is a superheating-drum,A5, heated by the waste products ot' combustion which pass downwardlyaround them.

I do not claim in this application the construction of the retort, asthat is covered by Application N o. 117,160, iiled January 11, 1884; northe construction ofthe superheaters, as they are covered byApplicationNo. 116,456, filed January 4t, 1884; but

1What I do claim isr 1. The combination of a gas-and-air-mix ing chamberand a combustion-chamber, said mixing chamber having a series of archeseach formed of rows of brick, with spaces between each row, and the rowsin the upper arch being directly over the spaces between the rows in thelower arch, substantially as described.A

2. The combination of a gasand-air-mixing chamber and acombustion-chamber, said mixingchamber having a series of arches iformed of rows of bricks, one arch being separated from the other byretaining-bricks, and the rows of one arch being directly over theretaining-bricks of the lower arch, and the Aretaining-bricks of theupper arch arranged in a staggered manner relatively to theretaining-bricks of the arch below, substantially as described.

In testimony whereof I affix my signature roo in presence of twowitnesses.

COMER JONES.

Witnesses:

HENRY DE ZARALA, HOWARD M. HoLBRooK.

